Wheel-turning machine



M. J. SIELAFF.

WHEEL TURNING MACHINE. APPLICATION FILED JAN-26. ism.

1,366,543, Patented Jan. 25, 1921.

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M. J. SIELAFF.

WHEEL TURNING MACHINE. APPLICATION msb umzs. ms.

Patepted Jan. 25,1921.

5 SHEETSQSHEET 2.

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M. J. SIELAFF.

WHEEL TURNING MACHINE. APPLICATION FlL ED MN. 26. 1918.

Patented Jan. 25, 1921.

5 SHEETSSHEET 3.

.- M. J. SIELAFF.

WHEEL TURNING MACHINE.

, APPLICATION FILED JANJ26. 19 18. 1,366,543. Patented Jan. 25,1921.

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finial M. J. SIELAFF.

WHEEL TURNING MACHINE.

APPUCATION FILED JAN. 26. 1918.

1,366,543. Patented Jan. 25,1921.

5 SHEETSSHEET 5.

JEEHZZU" ther objects and purposes of UNITED STATES PATENT OFFICE.

MM 3'. SIELAFF, 0F GLEV.TJLAIJI'I), OHIO, ASSIGNOR TO LOOMIS-SIELAFF COMPANY, OF CLEVELAND, OHIO, A COR?ORATION OF OHIO.

WHEEL-T URNING MACHINE.

Specification of Letters Patent.

Patented Jan. 25, 1921.

Application filed January 26, 1918. Serial Ho. 213,882.-

To all whom it may concern.

Be it known that I, MAX J. SIELAFF, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Wheel-Turning lVlachines, of which the following is a full, clear, and exact description, reference being lad to the accompanying drawings.

This invention relates to machines for finishing articles and more particularly to machines which are especially designed with the View of machining articles of cylindrical form, such as cast metal wheels.

It is the general purpose of the invention to provide a machi -e of this character which is capable of finishing these objects in an efiicient and economical manner. A further object of the invention is to produce a machine wherein the tools are capable of operating conjointly upon different portions or the same portion of the work; also to provide a machine wher in the tools are capable of being driven in different directions from a common operating deviceand one wherein the movements of the tools are convei iently and automatically controlled. Furthe invention will he set forth in the specification and will be realized in and through the drawings as well as by the combinations of elements embodied in the claims hereto annexed.

In the drawings, Figure 1 represents a plan view of'a machine of the character described, certain parts being broken away; 2 front side elevation and Fig. 3 a rear side elevation of such machine; Figs. and levations of opposite ends of such machine; t3 and 7 sectional views corresponding 'espectively to the lines 65 and 1g. 1; igs. 8 and 9 sectional views 7-7 or I i Y corresponding respectively to the lines 8 -8 and 9 -9 of Fi 6; Fig. 10 a sectional detail co responding to t re line 10-10 of Fig. 3; Fig. 11 a sectional view corresponding to the line 1l11 or Fig. 10; Fig. 12 a sectional view corresponding to the line 12l2 of Fig. 10; and Fig. 13 a similar view corre sponding to the line 1313 of Fig. 2. Describing byyreference' characters the various parts illustrated herein, 1- denotes generally thebedof the machine. to one side of the machine (hereinafter designated the rear side) is an electric motor 2, the naturefshaft Swhereof is Secured of the gears 10 on the shaft ll (see Figs. 1

and 5). A pinion 12 on the shaft 11 meshes with a gear 13 on the shaft 14, the lastmentioned shaft carrying a pinion 15 which is adapted to mesh with an internal gear 16 on the revolving head 17- of the work holder to which a cast metal wheel 18 is shown as secured. The shaft 1% is provided with a pinion 19- at its rear end meshing with a gear 20 on a shaft 21 having a pinion 22 meshing with a gear 23 on a shaft 23 ex.- tending into the gear-shift box 23 and provided with a plurality of pinions thereon (not shown) adapted to be engaged by corresponding gears (not shown) on the feed screw 24:, the gear-shift leverbeing in dicated at 23. The gear-shift arrangement referred to is-of standardconstruction and requires no detailed description and illustration. The feed screw operates a slide the upper portion whereof is indicated at 25 to which facing tool-holder, indicated generally at 26, is secured. The slide is made in two parts, the upper part, indicated at 25,

being transversely movable on the lower part 27. This lower part-is bolted to an extension 28 having a beveled surface 29 engaging beneath a corresponding beveled sur face on the bed 1, the part 27 having an extension 30 which engages beneath a shoulder or ledge on the bed 1 (see Fig- 4). The

ex ension 28 is provided with a depending justed by hand v(see Figs. 1 and 4). The

upper part of the slide 25 is mounted upon dovetail projection 27 on the lower part 27 and is provided with a screw 38 having an operating handle 39 for adjusting the part 25 relatively to the part2? (see Figs.

' ing from the upper part of the slide. and

2 and 6). A threaded rod 40, carried by the split internally threaded bracket 41 projecta stop 42 on the carriage serve to position the tool-holder 26 with reference to the work. The foregoing parts provide means for driving the tool slide either by hand or by the feed screw 24, means being provided for automatically breaking the driving connection between the feed screw and the slide, as will be pointed out hereinafter.

The feed screw 24 extends through a split nut comprising the upper section 43 and lower section 43 connected'by pins 44 and 44* respectively to a nut-closing plate 45 (see Figs. 2, 10, 11 and 13). This plate is provided with a hub 46 which is shown at 47as pinned to a shaft 48. The closing plate is provided with slots 49 each having an inclined portion 49 adapted to engage the pins 44 and 44 thereby to close the two nut sections 43 and 43 about the feed screw by the rotation of said plate. Helical springs 50 mounted in recesses in the nut sections tend to force the said sections apart but are normally prevented from rotating the plate 45 and opening said sections by a lock, which will now be described. The shaft 48 is provided with an operating wheel 48 and a lever 48 and has keyed thereto a pawl 51. This pawl cotiperates with a ledge or shoulder 52 on a lock 52 which is pivoted to the apron 31, as indicated at 52 The look (see Fig. 12) is provided with a chamber which receives a spring 53 cooperating with a plunger 54 which is adapted to engage the pawl 51 and normally hold the same against the shoulder 52. A roller 55 is also carried by the lock, and this roller is engaged by an abutment which normally prevents rotation of the lock and, under circumstances to be explained hereinafter, automatically rocks the lock on its pivot and disengasres the shoulder from the pawl, whereupon the springs 50 open the nut, rotating the plate 45 by the pins 44, 44 3 56 denotes a rod which is mounted in the ribs 31 of the apron, said rod having thereon a conical abutment 57 against which the roller 55 normally rests, whereby the abutment serves normally to hold the ledge 52 in engagement with the pawl. The rod is provided with a collar-.58, there being a spring 59 interposed between said collar and the adjacent rib 31. As illustrated, the tools which machine the cylindrical face of the" article 18 cut from right to left and the left hand end of the rod 56 is provided with means whereby the rod may be actuated to unlock the nut 43, 43 at the end of the cutting stroke. This means comprises a leverconnected to the left hand end of the rod and an adjustable abutment secured to V the bed and adapted to be engaged by the lever at the end of the cutting stroke" The lever referred to is indicated at 60 and is pivoted to a bracket 61 secured to the apron 31. The end of the lever opposite the rod 56 is adapted to engage the abutment 62,

which may be adjust-ably secured to the rack 37 by means of a pawl 62 and a set screw 62 engaging said pawl (see Figs. 2 and 13). From the construction illustrated and described, it will be apparent that, when the slide which carries the tool-holder 26 has been moved a distance predetermined by the abutment 62, the lever 60 will engage said abutment, thereby causing the conical abutment 5'? to rock the lock 52 on its pivot 52 and disengage the ledge 52 from the pawl. Thereupon, the springs 50 will open the nut 43, 43 and break the driving connection between the feed screw and the slide, the pins 44, 44 moving outwardly in the inclined slots 49 of the closing plate and rocking said plate during this operation. The slide may then be moved by means of the shaft 34, pinion 36and rack 37 to a position to institute the next stroke, and the nut will then be closed uponthe feed screwby means of the closing plate 45 through the head 48 or the lever handle 48 on the shaft 48. The rotation of this shaft rotates the plate 45 and drives the nut segments together by the pins 44, 44 and the inclined portions of the slots 49. The pawl will then.

be engaged beneath the ledge 52 and the nut will be locked in its closed position until again opened by the engagement of the lever 60 with the abutment 62. The nut 43, 43- and the plate 45 are mounted within a recess in the apron 31. This recess is closed by means of a cover plate 62, mounted on the hub of the closing plate and fastened to the apron, as indicated at 62 (see Figs. 3 and The opposite or rear side of the machine is provided with a slide 63, 64 similar to the slide described in connection with the front of the machine and supported on the bed in like manner. This slide is provided with an apron 64 having ribs 64 similar to the parts 31 and 31 of the slide on the opposite side of the machine (see Figs. 3 and 4), with a power driven feed screw 65 and with a pinion 67 engaging a rack 66 and a hand operating shaft 68 for said pinion which are similar to the feed screw and hand operating means'illustrated and described in connection with the front side of the machine. The slide 63, 64 is also preferably provided with a means for automatically breaking the driving connection between the same and the feed screw when the slide shall have been moved a predetermined distance longitudinally of I opening said nut being designated by the numerals applied to like parts on the front side of the machine. The screw is shown machining the cylindrical face of said article. The tool-holder 74: may be provided with two tools 75 adapted to operate on opposite side flanges 18 of the wheel 18 as well as with a finishing tool 7 5* adapted to finish the rough cut made by the tools 26, three such roughing tools being shown.

As'the machining of the flanges will re- V quire less time than is required for the roughing operation performed by the tools 26?, the tool 75 may then be employed to finish the cut made by the roughing tools, and the slide 63, 64: may be operated in the same manner as the slide 25, 27.

Because of the operations which are to be performed by the tools of the slide/63, 6%, the said slide is provided with an automatically operated feed for the upper portion of the slide while its tools are machining the lateral surfaces or flanges 18 of the articlelS. These features are illustrated more particularly in Figs. 6 to 9 inclusive. By means of a gear shift ho 76, operating handle 77' and an ordinary arrangement of change-speed gears within said box (see Fig. 1) a worm shaft 78 is driven at any desired speed from the feed screw 65. The worm 78 on the worm shaft is shown as meshing with a worm gear 79 on the-shaft 79. The shaft 79 projects through an apron 63 depending from the upper slide member. 80 denotes a gear loosely mounted on the shaft 7 9 and adapted to be connected to said shaft by means of a clutch 81 having an op eratmg'yoke .82. The gear 80 meshes with a gear 83 on a feed screw 88 (Figs. 7 and 9) and, when connected to the shaft 49, serves to drive said screw. TlllS screw 1s threaded into a'nut 84 on the carnage so that, by

the rotation of the screw, the upper portion 63 of the slide is moved transverselywith respect to the axis of the machine. The

shaft 83 is provided with a crank lever 83? whereby it may be rotated when the driving connection between said shaft and'the shaft 79 is broken. This connection may be automatically broken by the construction now to be described (see Figsl and 3). The clutch yoke 82 is mounted on a rock shaft 85 journaled in brackets 86. Rigid with the-rock shaft is a forked arm .87 the lower end.

whereof is connected to a rod or bar. 88 which slides through a stopcollar 89'carried by the bed. A dog 90'whichis adjustably secured to the rod or bar 88 is adapted to engage the finished the roughing cut.

stop collar when the slide moves a predetermined distance. This rocks the shaft 85 and the clutch yoke 82 to break the driving con nection between the gears 80 and 83 and thus between the shafts 79 and 83. By ad ing the dog 90, the point at which the driving connection will be broken may be z ed to suit the circumstances of any particaar case. I

At the left or rear end of the machine there is shown a clutch yoke 91 cooperating with a collar 92 carrying rods erate the movable members of a (not shown) mounted within t By the opera -"n of the clntc L armature shaft of ie motor is connec and disconnected from the pin on 5.

In the operation of the macl ion 5 having been connected the a mat. shaft, its motion is transmitted to the volving head or work holder by saio and thence to the article 18. at sneer. determined by the gears S and 1.0, sland pinion 15-. Through the gear 22, 23 and the change-speed gearii L box or casing 23 the feed screw 2% is operated to move the slide 25, 2'7 and the toolholder 26 across the cylindrical face of the article 18. By the internal i6,'the p rrv J! ion 69, gearing 41-4 3, and shalt (in, 5118 slicle63, 64 may be operated in like manner. When operated longitudinally of the bed, the tool-holder 7 f will preferably be pro vided with a tool similar to that employed j L "i .0

in the tool-holder 26, which will be referred the article 10. lifter these faces have been machined, the tool 70, similar to that car- 'ried by the holder 26 will be employed for finishing and the slides on both sides of the machine will be operated longitudinally of the machine; 2'. 6., parallel to the ofthe work holder.

As shown in Figs. 1, 4t and 6, the tools in each holder which opera-e upon the cylindrical face of the article 18 will be placed in substantially horizontal alinement. lVith this arrangement, the tools will each cut a spiral path about the article 18, the rate of travel of the slide being such t at each tool on the holderl26 will machine one-third of the cylindrical surface of the article, while the tool 7 5 will furnish theentire cylindrical surface, the speed of the tool-holders being suchthat the tools 75 will machine the wheel flanges before the tools 26 shall have When the tools 26? and 75- shall have passed beyond the left hand side of the article, the driving conbeing reestablished While the machine herein shown and described is particularly applicable to the fin nections between the two feed screws and the slides will be automatically broken and the.

slides may no returned by hand to initial position to repeat the operation upon the same or a subsequent article. As the tools 7 5 operate upon the lateral flanges or faces of the article, they will be moved gradually inwardly by the screw shaft 83 as the article revolves, whereby the lateral faces of the article may be machined to an extent to be determined by the adjustment of the dog 90. l l hen the driving connection between the screw 83 and the slide is broken, the slide may then be retracted outwardly by means of the crank handle 83", the slide adjusted, and the tool may then be employed to finish the cylindrical face, the driving connection between the slide and the screw 88 the clutch 81.

ishing or machining of cylindrical objects having inwardly projecting la eral faces or flanges, certain features thereof may well applicable to the machining of articles differing in shape and character from the one shown herein; and hence I do not pro- I pose to limit my invention in use to a machine for the particular article shown and described nor to the particular arrangement of parts of the machine so shown and de-- scribed, except as such limitations may be positively included in the claims or their inclusion may be necessitated by the state of the prior art.

Having thus described my invention, what i claim is I 1. In an apparatus of the character described, the combination, with a rotatable work holder, of means for driving the same, a tool support on each side of the work holder, means operated by such driving meansfor moving one of said supports in a direction substantially parallel to the axis of the work holder, means operated by such driving means for operating the other tool support in a'direction substantially parallel with the axis of said work holder as well as in a direction transversely of said axis,

means for automatically breaking the driv mg connection between each of sald tool holders and the main driving means when the said tool holders shall have been moved a predetermined distance in a direction sub- I stantially parallel to the axis of the work holder.

2. In a machine of the character described,

port and cotiperating with said feed screw, means operating to automatically separate the nut sections to break the driving connection between the tool support screw when the tool. support shall have moved a predetermined distance, a feed device for moving said support at substantially right angles to the movement imparted thereto by the feed screw, connections for driving the said device from the feed screw, and means for automatically breaking such connections when the tool support shall have been moved a predetermined distance by the econd feed screw.

In a machine of the character described, the combination of a tool support, a shaft for drivingthe same in one direction, means for automatically breaking the drivin connection between the tool support and the shaft when the said support shall have been moved a predetermined distance by said shaft, a shaft for driving said tool support in another direction, change-speed gearing interposed between the first and second shafts, a clutch interposed between the change-speed gearing and the second shaft, and means for automatically operating said clutch to break the driving connection between the second shaft and the change-speed gearingwhen the tool support shallhave been moved predetermined distance by the second shaft. 7

din a machine of the character described, the combination of a tool support, a screw shaft connected with said support for driving the same in one direction, means for automatically breakingthe driving connection between the tool support and the shaft when the said support shall have been moved a predetermined distance by said shaft,a shaft connected with said tool support for driving the same at substantially right angles to the direction imparted thereto by the first mentioned shaft, a clutch cooperating with the second shaft for driving the second shaft from the first shaft, and means for automatically operating said clutch to break the driving connection between the said shafts when the tool support shall have been moved a predetermined distance by tle second shaft.

' 5. In a machine of the character described, the combination, with a tool supporting slide having an apron, or a feed screw, a split nut, a pin projecting from each nut section, aclosingplate' having inclined slots cotiperating with said pins, a shaft von which said plate is mounted, a pawl connected to said shaft, a locking member having a surface adapted to be brought into and out of engagement with said pawl-and pivotally mounted on said apron, a rodcarried by said apron and having an abutment adapted, when the rodis moved relatively to said apron, to rock the and the feed' lock and thereby move the same out-of opoperative relation to the lock when the tool.

support shall havemoved a predetermined distance, and springs operating to separate the sections of the nut to break the driving engagement between the latter and the fee screw. 7

6. In a machine of the character described, the combination, with slide, of a feed screw, a split nut, a pin projecting from each nut section, a closing plate having inclined slots cooperating with said pins, a shaft on which said plate is mounted, a pawl connected to said shaft, a pivoted locking member having a surface adapted to be brought into and out of engagement with said pawl, a rod movable with said slide and having an abutment adapted when the rod is moved relatively to said slide, to rock the lock and thereby move the same out of operative relation to said pawl, means adapted to engage the rod to move the abutment in operative relation to the lock when the slide shall have moved a predetermined distance, and means operating to separate the sections of the nut to break the dri ing engagement between the latter and the feed screw.

7. In a machine of the character described, the combination with a tool supporting slide having an apron,'or" feed screw, a split nut on said slide, a pin proj ecting rom each nut section, a closing pl having inclined slots cotiperating with said pins, a shaft on which said plate is mounted, a pawl connected to said shaft, a locking member having a surface adapted to be brought into and out of engagement with said pawl and pivotally mounted on said apron, a rod carried by said apron and having an abutment adapted, when the rod is moved, to rock the lock and thereby move the same out of operative relation to said pawl, a spring normally holding said rod with the abutment out ofunlocking relation to said lock, means adaptedto operate the rod against the action of said spring and thereby move the abutment in operative unlocking relation to said lock when the tool support shall have moved a predetermined distance, and meansoperating thereupon automatically to separate the nut sections and thereby break the driving connection between the feed screw and the tool suport. p 8. In a machine of the character described, the combination, with a tool sup porting slide having an apron, of a feed screw, a split nut, a pin projecting from each nut section, a closing plate having inclined slots cooperating with said pins, a shaft on which said plate is mounted, a pawl connected to said shaft, a locking member having a surface adapted to. be brought .into and out of engagement with said pawl and pivotally mounted on said apron, a rod carried by said apron and having an abut-.

ment in operative unlocking relation to the lock when the tool support shall have moved a predetermined distance, and springs operating to separate the sections of the nut to break the driving engagement between the latter and the feed screw.

9. In a machine of the character ,described, the combination with a tool supporting slide, of afeed screw, a split nut, a pin projecting from each nut section, a closing plate having inclined slots cooperating with said pins, a shaft on which said plate is mounted, a pawl connected to said shaft, a locking member having a surface adapted to be brought into and out of engagement with said pawl and pivotally mounted on said slide, a rod carried by said slide and having an abutment adapted, when the rod is moved relatively to the slide, to rock the lock and thereby move the same out of operative locking relation to said pawl, springs operating to separate the sections of the nut to break the driving engagement between the latter and the feed screw, a spring normally holding said rod with the abutment out of operative unlocking rela ion to said lock, a lever pivoted intermediate of its ends to the apron and having one end connected to said rod, and an adjustable abutment adap ed to engage the portion of the lever which is opposite sa d rod when thetool support shall have been moved a prede ermined distance thereby to bring the abutment into operative unlocking relation to said lock.

10. in a machine of the character described, the combination of a bed, a carriage "movable therealong, a to l support movable with respect to said carriage, a feed screw, a breakable connection between said feed screw and said carriage and adapted to break the driving connection therebetween when the said carriage shall have been moved. a predetermined distance, a feed screw for moving the tool support along said carriage, a driving connection between said screws, means operating automatically to break the driving connection between the said screws when the latter shall have-been moved a predetermined distance, and a connection for operating the second screw after the driving connection therewith has been broken.

11. In a machine of the character described, the combination of a bed, a carriage movable therealong, a tool support movable with respect to said carriage, a feed screw,

a breakable driving connection between said screw and said carriage and adapted to said driving connection including a shaft driven by the first mentioned feed screw, a gear loosely mounted on the said shaft, a

' gear on the second feed screw with which been moved a predetermined distance the first mentioned gear meshes, a clutch for connecting the first mentioned gear to 1ts shaft, and means controlled by the movement of the tool support along its slide for operating the clutch to break the driving connection between the said shaft and the gear thereon when the tool support shall havemoved a predetermined distance.

12. In a machine of the character described, the combination of a bed, a tool support movable along said bed, a tool holder on said support and movable relatively thereto, a fQS-i screw, a breakable connection between said screw and said support and adapted to break the driving connection therebetween when the support shall have by said screw, a shaft on said support, a driving connection between said shait and said feed screw, feed screw mounted in the support and operatively connected with the tool holder, a breakable connection between the said shaft and the second feed screw, and meansoperative by the movement of the tool holder for automatically breaking such connection when the tool holder shall have moved a predetermined distance on its support.

13.1n a machine of the character described, the combination of a bed, a tool support movable therealcng, a tool holder mounted on said support and movable relatively thereto, a feed screw for driving said support, a breakable connection between said feed screw and said support, a feed screw mounted in the support andoperatively connected w'th the tool holder, a driving connection between the said feed screws, said connection including a clutch,

clutch yoke, a rock shaft rigid with said yoke, an arm connected with said rock shaft, and a stop on said support adapted to operatively engage said arm thereby to move the clutch to break the connection between the said feed screws.

14:. In a machine of the character described, the combination of a bed, a tool support movable therealong, means for driving said tool support along said ed, a breakable connection between said. tool support and driving means, and means for breaking such connection, the last mentioned means comprising an abutment carried by said'bed, a rod slidably supported by tie tool support and having an abutment adapted normally to clos tne driving connection between the tool support and its driving means, and a lever connected at one end to said rod and adapted to engage the first mentioned abutment.

15. In a machine of the character described, the combination of a bed, tool support movable therealong, a feed screw, a 7

split nut on the tool support adapted to be engaged by said feed screw, means tending to open the said nut, a rod slidably mounted on the tool support and having an abutment serving normally to hold the nut closed against the action of such opening means, and means operative by the movement of the tool support for moving the said rod and the abutment thereupon thereby to permit the nut to be opener.

16. a machine of the charac er described, the combination of a bed, a tool support movable therealong, a feed screw, a split nut on the tool support, means tending to open the said nut and thereby break the driving connection between the same and the feed screw, a' pivoted locking device adapted to hold the nut closed, a roller carried by said device, an abutment normally engaging said roller to hold the said device in operative relation to said nut, a movable abutment cooperating with said roller, and means for moving said abutment in a direction to unlock the said de.

screw, a shaft for closing the said nut, a

pawl projecting from said shaft, a pivoted locking device having a shoulder adapted .to engage said pawl, a spring-pressed plunger in said locking device adapted to hold the pawl against said shoulder, and means operative by the movement of the carriage for rocking the locking device about its pivot thereby to disengage the same from said pawl.

. In testimony whereof, I hereunto affix my MAX J. smears signature. 

